tesa_HAF-amber_dr_001
Product information

tesa® HAF 8405

Heat activated film



Product description

tesa® HAF 8405 is a double-sided thermosetting brown adhesive film without backing based on phenolic resin and nitrile rubber.

At room temperature tesa® HAF 8405 is not tacky. It is activated for pre-lamination by heat and starts to become tacky at 90 °C. In a second application step heat and pressure is applied over a certain period of time.

After curing tesa® HAF 8405 reaches a very high bonding strength, high temperature stability and excellent chemical resistance. Because of the rubber components tesa® HAF 8405 remains flexible and elastic.

tesa® HAF 8405 is supplied with a strong paper liner and can easily be slit and die cut.

Main applications

It is suitable for bonding of all thermal resistant materials such as metal, glass, plastic, wood and textiles.

Technical properties

Shelf life time < 25°C

12 months

Bonding strength

12 N/mm²

Type of adhesive

nitrile rubber / phenolic resin

Shelf life time < 15°C

15 months

Type of liner

glassine

Shelf life time < 5°C

18 months

Total thickness

30 µm

Backing material

none

Color

amber

Additional Info

Processing:

1. Pre-lamination:
tesa® HAF 8405 is laminated before curing. For this process we recommend a temperature between 90 °C and 110 °C.

2. Bonding:
The bonding conditions temperature, pressure and time depend on the application. Following parameters can be regarded as a guideline:

Splicing application:
  • Temperature: 120 - 200 °C
  • Pressure: > 2 bar
  • Time: 15 sec - 90 sec
Friction liners for clutches:
  • Temperature: 180 - 230 °C
  • Pressure: > 6 bar
  • Time: 5 min - 30 min

To reach maximum bonding strength surfaces should be clean and dry. Storage conditions according to tesa® HAF shelf life concept.

Note: Bonding strength values were obtained under standard laboratory conditions (Mean values). Value is guaranteed clearance limit checked with each production batch (Material: Etched aluminium test specimen / Bonding conditions: Temp. = 120 °C; p = 10 bar; t = 8 min)

tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.

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